Manga/Anime
Fun Japan
Music
Nazo
100
"You are already dead".
Who says this?
Kenshiro
100
What city is called
the "Kitchen of Japan"?
Osaka
100
If BTS meet TWICE,
how many people are there?
16 ( BTS=7, TWICE=9 )
100
I am black when I am clean,
I am white when I am dirty.
What am I?
A blackboard
200
"I'm a genius."
Which sportsman says this?
Sakuragi Hanamichi
200
What is Japan's
national musical instrument?
The Koto.
200
What fruit is the #1
Japanese YouTube music video.
(Singer / Song)
Yonezu Kenshi - Lemon
200
I am an odd number.
If you take away a letter I am even.
What number am I?
Seven
300
A rock with seas. 
Sailor moon
300
Where is
"Obachan no Harajuku"? (Tokyo)
Sugamo
300
AKB48 = Akihabara 48.
HKT48 = Hakata 48.
STU48 = ????
Which place is this?
Setouchi 48. 
300
You see me once in June,
twice in November, and
not at all in May.
What am I?
The letter E
400
What manga has the most volumes (tankobon)?
Golgo 13 (207+ volumes).
400
What Japanese sport is called
"The gentle way"?
Judo
400
Which video sharing site did Ado
first use for her music?
niconico
400
I stand tall when I am young
and short when old.
What am I?
A candle
500
All for the team.
Haikyu
500
This NBA player has the same name as a Japanese City.
Which city / player is it?
Kobe ( Kobe Bryant )
500
What is the best-selling single
ever in Japan?
Oyoge! Taiyaki-kun.
500
What is yours
but other people use more?
Your name.